Extension table



1. GERBER.'

EXTENSION TABLE. APPLlcATfoN FILEDJuNr-:21.1921.

Patented @ma 10,1922@ 2 SHEETS-SHEET ATTORNEY WITNESS:

1. GERBER.

EXTENSION TABLE.

I APPLICATION FILED JUNE 21,1921. y 1,431,886, Patented Oct. 10, 1922.

2 SHEETS-SHEET 2.

III"

III III" INVENTOR 55 ture lO'which comprises a frame 11' having`Patented @ce 10, i922.

raar

JOHN GERBER, OF CARLSTAIDT, NEW JERSEY.

EXTENSION TABLE.

Application led .Tune 21, 1921.

To all whom it may concer-1t.'

Be it known that l, JOHN Greens, a citizen of CZecho-Slovakia, residingat Carlstadt, in the county of Bergen and State of New Jersey, haveinvented new and useful Improvements in Extension Tables, of which thefollowing is a specication.

This vinvention relates to extension tables.

More particularly the invention relates to extension tableswhose leavesare disposed beneath the table top proper in the nonextended conditionof the table, and'iwhich table top proper is raised and lowered in themovement of the leaves, either of them, to extended positions. y

Some of the objects of the present invention are: to produce acomparatively practical operating mechanism for tables of the charactermentioned; to produce a more thoroughly efficient operating mechanismfor converting an extension table from its non-extended condition to anextended condition and vice versa; to employ auxiliary means forelevating the top when extending the leaves. 'With' these and otherobjects in view the invention resides in the particular provision,relative arrangement and the operation of parts hereinafter more fullydescribed and illustrated in the accompanying drawing, in which:

Figure 1 is a side elevation of the table of the present invention; theextensible leaves being shown in non-extended positionsin full lines andin extended positions in dotted lines.

Figure 2 is a longitudinal sectional view through the table showing oneof the extensibleleaves extended and the table top in the position itassumes to allow the extension of the leaf.

Figure 3 is a plan view with the top reymoved showing the underlyingstructure and one ofthe extensible leaves extended. Figure 4. is atransverse sectional view taken on the line L1 -4, Figure 1.

vFigure 5 is a detail sectional view illustrating the table top raisingand lowering mechanism.

4Figure 6 is a detail perspective view of lpart of the means with whichthe toggle is actuated.

Referring now more particularly to the several views of the drawings forall de-I tails, Will be manifest-that. the table of the presentinvention will include a struc- Serial No. 479,259.

sides 12, 12, and ends 13, 13; supporting legs 14; and a cross piece 15which is attached to the sides 12, 12 of the frame 11. Longitudinals 16,17, 18 and 19 are arranged in pairs, spaced, and the longitudinals 16and 19 are spaced from the sides 12, 12, respectively. The longitudinalsextend from one end 13 to the other end 13 and are attached thereto. Useis made of a top 2O and extensible leaves 21 and In order that each ofthe leaves 2l and 22 may be moved to an extended position flush with thetop 2O by first tilting the top; and in order that each of said leavesmay be moved to a non-extended position of normality from its extendedposition by first .raising andthen lowering the top 20, each lof saidleaves 21 and 22 carries a mechanism 23. lnasmuch as the mechanism ofeachvof the leaves is identical, a description of one will be given.`includes a member 24 whichis substantially square in cross section; itis hollow; the same has an opening 25 in one of the walls thereof andanother opening 267m another of its walls; and the member is attached tothe underside of the leaf 'as at 27. A toggle 28 is arranged in themember 24, andis operable to effect the raising and the lowering of thetop 20. The toggle comprises a pair of spaced levers 29 which oppose apair of spaced levers 30. The pairs lof levers are pivotally connectedrespectively to blocks 31 and 32. A roller 33 is mounted for rotation ona small axle or shaft to which the opposing ends of the levers 29 and 29are connected for pivotal movement while the levers 30 and 30 areattached or made fast to the said shaft by small set screws to preventthe derangement of the parts of the toggle. The operation of the toggleis effected in the employment of a sheave which is rotatably mounted' inythe member 24. The sheave 34 isrotated 'by virtue of a flexible member35 which has one end thereof connectedl to the said sheave and theopposite end thereof is connected to an adjustable member 36 `which inturn is connected to a manipulator 37 by a rod 38. `The iexible member35 is guided through an. opening in the block 32. rIhe rod 38 operatesin a guide 39. Flexible members 40 and 41 are connected respectively tothe `,sheave 34 and the blocks 31 and 32. Pulling the manipulator 37outwardly causes the vblocks 31 ,and 32 to move toward each Themechanism at an acute angle with respect to a horizontal plane, and themembers 43 are cut at an acute angle with respect to the plane of theleaf to which they are attached. The

leaf 21 in being moved to its different posii tions moves in a truehorizontal plane. The

leaf 22 has members 45, 45, which move between the sides 12, 12 andAlongitudinale 16 and 19. The confrontingA faces'of the sides 12, 12andthe longitudinals 16V and 19 have guide ways in which the projections46 of the members 45, 45 move; `The disposition of guide ways in whichthe projections 46 move are at an acute angle with p respect to ahorizontal plane, and the members 45, like the members-43 are cut at vanangle so that the leaf 22 will be caused to move in a true horizontalplane.

As stated it is one of the objects of the presentinvention toemployauxiliary means for raising the top of the table, the top 20.

The said auxiliary means 50 includes a pair of members 51 which arepivotally connected to the top 20 as at 52. The members each have anadjustable element 53. The members 51 move in -guides 54 and the said Yguides also guide the block 55 in its movements. The block 55 has parts56, 56 which engage the elements'53; and parts 57, 57 between which andthe cross piece 15 are arranged springs 58, 58, which have a normaltendency to raise the top through the intervention of the block 55 andthe members 51. The springs of themselves howeverare not strong enoughto raise the top 20. The top 2O has a plurality of holes therein, andpins 59 are receivable in the said holes so as to take up lateralstresses when the top is in its normal position.

In moving one of the leaves 21 or 22 to an extended position, the leafis taken hold of and it is pulled outwardly. In pulling the leafoutwardly it moves 'upwardly at the same time due to the angularly cutmembers thereof riding onv the respective end of the frame 11. Unduefriction between the leaf and the top 2O is avoided by the action of thesprings 58 which hold the under-face of the @O10 20 slightly awayfromthe top face of the lea-f. The leaf to its normal non-extendedposition, the" manipulator 37"A is grasped and an `outward pull isexerted thereon which causes the raising ofthe roller 33 due to the'operation of the toggle. The roller engages the resilient trackl 42thus raising the end of the top 2O to allow the confronting end of theleaf to pass beneath the top. The leaf is pushed inwardly until itencounters the cross piece 15 which prevents further inward movement ofthe leaf, the same being then in its normalposition. Upon releasing the,manipulator the weight of the top moves the blocks 31 and 32 away fromeach other and thus allows the roller to assume a normal position withinthe member '24.

`ent manner than as explained above in which the -leaf is merely takenhold of and pulled outwardly, by pulling on the manipulator so as `totilt the top and` then pull the leaf outwardly.` The angularly cutmembers of each of the leaves has a stop shoulder `6() to limit theoutward movement of the leaves. gage the ends 13, 13.

It should be manifest that, in operating the mechanism 23 to raise thetop 20, the auxiliary means 50 comes into play automatically. It followsfrom this lthat there need be no strong pulling strain exerted on themanipulators 37 in raising the top.

That is claimed is: p

1. lAn extension table comprising a sup- The stop shoulders 60v en- .7

porting structure, a top movably supported n by said structure, anextensible leafsupported by said structure, mechanism carried by theleaf for effecting the raising or tilting of said top in the movement ofsaid leaf, and top raising and cushioning means `including guidedmembers pivotally connected to said top;

2. An extension table comprising a supporting structure, a top movablysupported by said structure, extensible leavessupported by saidstructure and having limited movement in either direction and lyingnormally in non-extended positions beneath the top and lying ush withthe top in their extended positions, and mechanism for effecting thetilting ofthe top, said mechanism comprising toggles, a roller carriedby each toggle engageable with-the top, manipulating means for operatingeach toggle carried by each of said leaves; and auxiliary topiV portingstructure comprising a frame having a cross piece and legs,longitudinals having guide ways therein forming va part of said frame,parts of said frame `also having guide ways therein, a top movablysupported by said structureand normally held against lateral movement,extensible leavessupported by said structure members carried by saidleaves, projections on said members which move in said guide ways, stopson said members to limit the outward movement of said leaves, the saidcrosspiece limiting the inward movement of said leaves, mechanismcarried by each of said leaves for ei'iecting the raising of said top inthe movement of said leaves in either direction of their movements.

4. An extension table comprising a supporting structure, a top movablysupported by said structure, resilient tracks carried by said top,extensible leaves supported by said structure and having limitedmovement in either direction and lying normally in nonextended positionsbeneat-h the top and lying iush with the top in their extendedpositions, and mechanism for effecting the tilting of the top, saidmechanism comprising toggles, a roller carried by each toggle en- 1gageable with one of said tracks, and manipulating means for operatingeach toggle carried by each of said leaves. i

5. An extension table comprising a supporting structure, a top movablysupported by said structure, extensible leaves supported by saidstructure and adapted to underlie said top, means for effecting theraising of the opposite ends of said top in the movement of said leaves,and cushioning means including guided spring actuated members pivotallyconnected to said top.

6. An extension table comprising a supporting structure, a top movablysupported by said structure, extensible leaves supported by saidstructure and adapted to underlie said top, means for raising theopposite ends of said top in the movement of said leaves,

and cushioning means including guided members pivotally connected tosaid top, a block, the free ends of said members being connected to saidblock, and springs between said supporting structure and said block.

7. An extension table comprising a supporting structure, a top movablysupported by said structure, extensible leaves supported by saidstructure and adapted to underlie said tog, means for raising theopposite ends of said top in the movement of said leaves, and cushioningmeans comprising guided members pivotally connected to said top, ablock, adjusting devices between said members and said block, andsprings between said supporting structure and said block.

8. An extension table comprising a supporting structure, a top movablysupported by said structure, extensible leaves supported by saidstructure which have limited movement in opposite directions and lyingthe top and lying flush with the top in their extended posit-ions, andmechanism for effecting the tilting of the top carried by each or' saidleaves, said mechanism including pivoted levers, a roller carried bysaid levers, a turnable member, a iiexible member having one end thereofxed and the opposite end connected to said turnable member, the saidflexible member acting against said roller to raise the same when theflexible member is flexed by virtue of the turning of said turnablemember.

9. An extension table comprising a supporting structure, a top movablysupported by said structure, extensible leaves supported by saidstructure which have limited movement in opposite directions and lyingnormally in non-extended positions beneath the top and lying flush withthe top in their extended positions, mechanism for effecting the tiltingof the top carried by each of said leaves, said mechanism comprisingpivoted levers, a roller carried by said levers and engageable with saidtop, a grooved member, a flexible member having one end thereof xed andthe opposite end connected to said grooved member and in engagement withsaid rol-ler, and means for turning said grooved member; and top raisingand cushlening means.

In testimony whereof I hereby aiiix my signature.

JOHN GERBER.

normally in non-extended positions beneath

